23273417821 has 8 divisors (see below), whose sum is σ = 24077770200. Its totient is φ = 22469186880.

The previous prime is 23273417777. The next prime is 23273417837. The reversal of 23273417821 is 12871437232.

It can be written as a sum of positive squares in 4 ways, for example, as 529460100 + 22743957721 = 23010^2 + 150811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23273417821 - 2¹⁷ = 23273286749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23273417861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543991 + ... + 585211.

It is an arithmetic number, because the mean of its divisors is an integer number (3009721275).

Almost surely, 2^23273417821 is an apocalyptic number.

It is an amenable number.

23273417821 is a deficient number, since it is larger than the sum of its proper divisors (804352379).

23273417821 is a wasteful number, since it uses less digits than its factorization.

23273417821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60719.

The product of its digits is 112896, while the sum is 40.

The spelling of 23273417821 in words is "twenty-three billion, two hundred seventy-three million, four hundred seventeen thousand, eight hundred twenty-one".